Question 1

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is not an assumption of the waiting line models presented in the textbook?

Accepted Answer

A) the customers are patient 
B) customers come from a finite population 
C) customer arrival rate is described by a Poisson distribution 
D) service times are described by an exponential distribution 
E) the waiting line priority rule is first-come, first-served 
A) the customers are patient 
B) customers come from a finite population 
C) customer arrival rate is described by a Poisson distribution 
D) service times are described by an exponential distribution 
E) the waiting line priority rule is first-come, first-served

Question 3

List examples of dedicating specific servers for specific transactions.

Accepted Answer

limit the number of items that

Question 4

Most larger-scale waiting line systems use ________ simulation.

Accepted Answer

A) finite queue 
B) finite customer 
C) nonexponential arrival 
D) discrete-event 
E) multi-phase 
A) finite queue 
B) finite customer 
C) nonexponential arrival 
D) discrete-event 
E) multi-phase

Question 5

For a single-server, single-line, single-phase waiting line system, where F1F1F1S1F1F1F10 represents the mean arrival rate of customers and F1F1F1S1F1F1F10 represents the mean service rate, what is the formula for the average time spent in the system?

Accepted Answer

A) F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10 
B) F1F1F1S1F1F1F10 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
C) F1F1F1S1F1F1F102 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
D) 1 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
E) F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
A) F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10 
B) F1F1F1S1F1F1F10 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
C) F1F1F1S1F1F1F102 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
D) 1 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
E) F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10)

Question 6

A single-line, multiple-server system has _____ ______ in terms of waiting times than the same system with a line for each server.

Accepted Answer

A) poorer performance 
B) similar performance 
C) better performance 
D) comparable performance 
E) reduced performance 
A) poorer performance 
B) similar performance 
C) better performance 
D) comparable performance 
E) reduced performance

Question 7

Which of the following is least likely to be considered a finite customer population?

Accepted Answer

A) subassemblies in a just-in-time manufacturing environment 
B) customers in an amusement park 
C) fast food restaurant employees waiting to use the restroom 
D) planes waiting to take off at an airport 
E) a class of 10 students who might visit their professor during office hours 
A) subassemblies in a just-in-time manufacturing environment 
B) customers in an amusement park 
C) fast food restaurant employees waiting to use the restroom 
D) planes waiting to take off at an airport 
E) a class of 10 students who might visit their professor during office hours

Question 8

The university replication facility provides copier repair service for the university and for local businesses. Over the last year the mean arrival rate is 55 copiers a month. The repair facility uses two identical repair technicians who can repair an average of 30 copiers each month. The system is set up as a single channel, first come first served, multi-server system. 
a)What is the utilization of the service center?
b)What is the probability that no copiers will be in the system?
c)What is the average number of copiers waiting in line?
d) What is the average time a copier is waiting to be repaired?
e) What is the average number of copiers in the system?

Accepted Answer

a)91.7%
b

Question 9

What occurs when a customer decides not to enter the waiting line?

Accepted Answer

A) vacillating 
B) walking 
C) reneging 
D) balking 
E) jockeying 
A) vacillating 
B) walking 
C) reneging 
D) balking 
E) jockeying

Question 10

System server capacity is a function of ______ and _______.

Accepted Answer

A) phase, lines 
B) time, lighting 
C) facilities, management 
D) facilities, proficiency 
E) utilization, proficiency 
A) phase, lines 
B) time, lighting 
C) facilities, management 
D) facilities, proficiency 
E) utilization, proficiency

Question 11

Walking occurs when a customer decides not to enter the waiting line.

Accepted Answer

A) True 
 B)False

Question 12

Describe the relative benefits of using a single-line system vs. a multi-line system.

Accepted Answer

Changing to a single-line model from a m

Question 13

4! = _________?

Accepted Answer

A) 0 
B) 1 
C) undefined 
D) 4 
E) 24 
A) 0 
B) 1 
C) undefined 
D) 4 
E) 24

Question 14

Consider a single-line, single-server waiting line system. Suppose that there is only physical space for 2 units in the system (one in line and one being served). The arrival rate λ is 80 people per hour. The manager, Johnny Three Toes, has the choice among workers of different speeds to be the server. He wants to save money by hiring the slowest server that will result in an average number of units in the system (L)equal to 2.
a)Using Johnny Three Toes' strategy, what will the server's service rate per hour (F1F1F1S1F1F1F10)need to be?
b)What is the probability of having 3 or more units in the system?
c)What is wrong with Johnny Three Toes' strategy?

Accepted Answer

(a)120, (b)29.63%, (c)Even tho

Question 15

Which of the following is least likely to be considered a finite customer population?

Accepted Answer

A) subassemblies in a just-in-time manufacturing environment 
B) fast food restaurant employees waiting to use the restroom 
C) planes waiting to take off at an airport 
D) customers in a grocery store 
E) a class of 10 students who might visit their professor during office hours 
A) subassemblies in a just-in-time manufacturing environment 
B) fast food restaurant employees waiting to use the restroom 
C) planes waiting to take off at an airport 
D) customers in a grocery store 
E) a class of 10 students who might visit their professor during office hours

Question 16

In a well designed waiting line system it is the variability in _____ and ______ patterns that causes waiting lines.

Accepted Answer

A) server, customer 
B) poisson, exponential 
C) arrival, service 
D) arrival, poisson 
E) service, exponential 
A) server, customer 
B) poisson, exponential 
C) arrival, service 
D) arrival, poisson 
E) service, exponential

Question 17

0! = _________?

Accepted Answer

A) 0 
B) 1 
C) undefined 
D) F1F1F1S1F1F1F101 
E) F1F1F1S1F1F1F10 
A) 0 
B) 1 
C) undefined 
D) F1F1F1S1F1F1F101 
E) F1F1F1S1F1F1F10

Question 18

Which of the following is not an assumption of the waiting line models presented in the textbook?

Accepted Answer

A) the customers are patient 
B) customers come from an infinite population 
C) customer arrival rate is described by a Gaussian distribution 
D) service times are described by an exponential distribution 
E) the waiting line priority rule is first-come, first-served 
A) the customers are patient 
B) customers come from an infinite population 
C) customer arrival rate is described by a Gaussian distribution 
D) service times are described by an exponential distribution 
E) the waiting line priority rule is first-come, first-served

Question 19

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed)service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Accepted Answer

The answer of Consider a single-line, single-server waiting line system....

Question 20

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

Accepted Answer

A) True 
 B)False

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Which of the following is not an assumption of the waiting line models presented in the textbook?

List examples of dedicating specific servers for specific transactions.

Most larger-scale waiting line systems use ________ simulation.

For a single-server, single-line, single-phase waiting line system, where  represents the mean arrival rate of customers and  represents the mean service rate, what is the formula for the average time spent in the system?

A single-line, multiple-server system has _ __ in terms of waiting times than the same system with a line for each server.

Which of the following is least likely to be considered a finite customer population?

What occurs when a customer decides not to enter the waiting line?

System server capacity is a function of and _.

Walking occurs when a customer decides not to enter the waiting line.

Describe the relative benefits of using a single-line system vs. a multi-line system.

4! = _________?

Which of the following is least likely to be considered a finite customer population?

In a well designed waiting line system it is the variability in _ and __ patterns that causes waiting lines.

0! = _________?

Which of the following is not an assumption of the waiting line models presented in the textbook?

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed)service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

Introduction to Operations Management

Operations Strategy and Competitiveness

Product Design and Process Selection

E-Commerce and Supply Chain Management

Total Quality Management

Statistical Quality Control

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Independent Demand Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: an Introduction

Spreadsheet Modeling: an Introduction

Master Scheduling and Rough-Cut Capacity Planning

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Exam 18: Waiting Line Models

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Which of the following is not an assumption of the waiting line models presented in the textbook?

List examples of dedicating specific servers for specific transactions.

Most larger-scale waiting line systems use ________ simulation.

For a single-server, single-line, single-phase waiting line system, where  represents the mean arrival rate of customers and  represents the mean service rate, what is the formula for the average time spent in the system?

A single-line, multiple-server system has _____ ______ in terms of waiting times than the same system with a line for each server.

Which of the following is least likely to be considered a finite customer population?

What occurs when a customer decides not to enter the waiting line?

System server capacity is a function of ______ and _______.

Walking occurs when a customer decides not to enter the waiting line.

Describe the relative benefits of using a single-line system vs. a multi-line system.

4! = _________?

Which of the following is least likely to be considered a finite customer population?

In a well designed waiting line system it is the variability in _____ and ______ patterns that causes waiting lines.

0! = _________?

Which of the following is not an assumption of the waiting line models presented in the textbook?

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed)service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

Introduction to Operations Management

Operations Strategy and Competitiveness

Product Design and Process Selection

E-Commerce and Supply Chain Management

Total Quality Management

Statistical Quality Control

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Independent Demand Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: an Introduction

Spreadsheet Modeling: an Introduction

Master Scheduling and Rough-Cut Capacity Planning

Filters

A single-line, multiple-server system has _ __ in terms of waiting times than the same system with a line for each server.

System server capacity is a function of and _.

In a well designed waiting line system it is the variability in _ and __ patterns that causes waiting lines.